WorksheetsSec. 11: User Accounts and Groups
Total questions: 10
Worksheet time: 5mins
Unlike other Operating Systems, Linux is a single-user operating system.
True
False
Most account features are defined in the /etc/passwd file, except:
Username
Password
Connection type
A __________ uses a one-way mathematical process with additional random input to produce what looks like nonsense to humans.
salted hash
password encryption
firewall
The /etc/shadow file is usually stored with restrictive permissions, with ownership by root.
True
False
The fields in /etc/group contains the following:
Shell, Kernel, Package Information
Group Name, Password, GID
IP address, metamask, domain name
Linux does not allow multiple users to access the computer simultaneously.
True
False
Information provided in the default output of the who command includes the following:
Username, password, ip address
GID, UID, password
Username, Terminal Identifier, Login Date and Time
The _________ column tells what program the session is running.
STATUS
PROGRAM
WHAT
Linux limits the number of user accounts in a single computer to 100.
True
False
Which of the following ways can you not run a command-line task as the root user?
Log in directly as root at a text-mode shell or by using a remote login tool such as SSH.
Disabling firewall and force open a directory, file or folder
By using the sudo command
